200902139 九、發明說明 【發明所屬之技術領域】 本發明是燃燒煤炭、燃燒原油、以及燃燒重油等之發 電廠所適用的排煙脫硫裝置，尤其是關於使用海水法進行 脫硫的排煙脫硫裝置。 【先前技術】 以往’對於以煤炭或原油等作爲燃料的發電廠，從鍋 爐所排出的燃燒排放氣體（以下，稱之爲「鍋爐排氣」） ，是先將鍋爐排氣中所含有的二氧化硫（so2)等之硫氧 化物（Sox )除去後，再釋放於大氣。作爲實施如此脫硫 處理之排煙脫硫裝置的脫硫方式，周知有石灰石石膏法、 噴霧乾燥機法、以及海水法。 其中’採用海水法的排煙脫硫裝置（以下，稱之爲「 海水脫硫裝置」），是使用海水作爲吸收劑的脫硫方式。 此方式’例如，是藉由將海水及鍋爐排氣供給到：將大致 如圓筒般之筒狀予以直立設置之脫硫塔（吸收塔）的內部 ’以海水作爲吸收液形成濕式基材的氣液接觸來去除硫氧 化物。 海水脫硫裝置1，例如如第6圖所示，其一方之海水 是從脫硫塔2的上部所供給而自然落下，其與從脫硫塔2 的下部所供給而上昇之鍋爐排氣之間形成氣液接觸。海水 與鍋爐排氣的氣液接觸，是利用在脫硫塔2內的上下方向 以預定間隔配置複數段的多孔板架3作爲濕式基材，使海 -5- 200902139 水及鍋爐排氣通過貫穿設置在多孔板架3的多數個孔4而 達成。又，圖中的元件符號5是海水供給管，6是讓脫硫 後的海水流出的海水排出管，7是鍋爐排氣供給口，8是 讓脫硫後的鍋爐排氣流出的鍋爐排氣排出口（例如，請參 照專利文獻1、2 )。 [專利文獻1]日本特開平1 1 -290643號公報 [專利文獻2]日本特開2001-129352號公報 【發明內容】 [發明所要解決之問題] 然而，在上述之海水脫硫裝置1的脫硫塔2內，由於 是以從下方上昇的鍋爐排氣與從上方流下的海水氣液接觸 而脫硫之方式所構成，所以當鍋爐排氣與海水之流動的分 布在脫硫塔2的水平斷面內形成不均一時，在脫硫性能的 確保上就會帶來障礙。 具體性說明如下，當在脫硫塔2的水平斷面內，鍋爐 排氣的流動與海水的流動產生分布不均一的偏流時，例如 如第6圖所示，上昇流動的鍋爐排氣（以實線箭頭顯示） 與朝下自然落下流動的海水（於圖中以虛線箭頭顯示）造 成分離，產生相互通過不同區域的孔4而流動之所謂鍋爐 排氣的竄氣現象。由於如此，鍋爐排氣與海水的接觸變得 不夠充分，造成有助於鍋爐排氣與海水相互接觸而脫硫的 流量比率降低。 上述偏流及竄氣現象，是成爲鍋爐排氣中的硫氧化物 -6 - 200902139 不能充分被脫硫而直接被排氣之脫硫性能降低的原因。如 此之偏流及竄氣現象，在所處理之鍋爐排氣的量增大、或 是在將鍋爐排氣的上昇速度設定在比較低速的所要範圍等 前提時，脫硫塔2的斷面積愈大則愈顯著。 產生上述偏流的原因，是被認爲諸如：鍋爐排氣的流 入角度、脫硫塔2的尺寸（寬度、深度、高度、或是塔徑 、高度）、多孔架板3的設置位置及片數等因素。但是， 若要找出可以防止偏流產生的最佳尺寸形狀，則必須藉由 模型試驗或模擬試驗來解析上述原因，會成爲需要費時與 成本等之極困難的作業。 如此地，針對於採用海水法之排煙脫硫裝置（海水脫 硫裝置），由於因脫硫塔的大型化等容易產生偏流及鍋爐 排氣的竄氣現象而使得脫硫性能降低，因此期望開發出以 容易且簡單的構造就可以確實地防止上述缺失而可以得到 良好的脫硫性能之排煙脫硫裝置。 本發明，是有鑑於上述情事而發明，其目的在於提供 一種以容易且簡單的構造就可以確實地防止偏流及鍋爐排 氣的竄氣現象而能夠得到良好的脫硫性能之採用海水法的 排煙脫硫裝置。 [發明解決問題之技術手段] 本發明爲了解決上述問題而採用了以下的手段。 本發明之排煙脫硫裝置，是使從脫硫塔之上部流下的 海水與由脫硫塔之下方上昇的燃燒排放氣體進行氣液接觸 200902139 並脫硫之海水法的排煙脫硫裝置，其特徵爲：配設有將上 述脫硫塔內的水平斷面積區隔成預定値以下之鉛直方向的 區隔板。 依據如此之排煙脫硫裝置，由於配設有以使得脫硫塔 內的水平斷面積區隔成預定値以下之鉛直方向的區隔板， 使海水的橫向流動受到區隔板所限制而難以產生偏流。 在上述的發明中，其中上述氣液接觸是以由多孔架板 所成的濕式基材來進行，上述區隔板，是被設置爲：從上 述濕式基材朝向上方，到至少比上述濕式基材上之海水滯 留高度還高的位置爲理想，藉此，可以將壓力損失抑制於 最小限度並可以防止偏流。 又，在上述之發明中，上述氣液接觸爲噴霧式或是充 塡方式之中之任一種皆可。 [發明效果] 依據上述之本發明，由於是以將脫硫塔內的水平斷面 積區隔成預定値以下之方式配置鉛直方向的區隔板，來限 制海水的橫向流動，使朝上上昇的燃燒排放氣體的流動與 朝下流下之海水流動的分布難以在水平斷面內產生成爲不 均一的偏流。因此，對於採用海水法的排煙脫硫裝置，由 於以容易且簡單的構造就可以確實地抑制或防止因脫硫塔 的大型化等容易產生之偏流及鍋爐排氣的竄氣現象，而能 夠得到良好的脫硫性能。 -8- 200902139 【實施方式】 以下，依據圖面說明本發明之排煙脫硫裝置的一實施 形態。 第1圖所示之海水脫硫裝置1A的脫硫塔2，是藉由 海水法將例如從以煤炭或原油等爲燃料之發電廠的鍋爐所 排出的燃燒排放氣體（以下，簡稱爲「鍋爐排氣」）中所 含的二氧化硫（so2)等之硫氧化物（sox)，在排放到大 氣之前予以去除的裝置。使用被稱爲海水法之脫硫方式的 海水脫硫裝置1 A，是使用海水作爲吸收劑。 圖示之海水脫硫裝置1 A，是藉由將海水及鍋爐排氣 供給到：將大致圓筒狀予以直立設置之脫硫塔2的內部， 以海水作爲吸收液形成濕式基材的氣液接觸來去除硫氧化 物。供給至脫硫塔2的海水，是藉由從脫硫塔內的上部噴 出而在內部自然落下，相對於此，供給至脫硫塔2的鍋爐 排氣，是從脫硫塔2的下部被導入於脫硫塔內並上昇。 於脫硫塔2的內部，配置有以預定間隔設置且於上下 方向有複數段的多孔架板3。此多孔架板3，爲沒有堰及 溢流部的多孔板，藉由使落下的海水與上昇的鍋爐排氣經 過多數的孔4，使其產生相互接觸之氣液接觸。 亦即，多孔架板3，係發揮作爲讓由海水供給管5導 入的海水與從鍋爐排氣供給口 7導入的鍋爐排氣形成氣液 接觸之濕式基材的功能，利用形成此氣液接觸，使吸收液 之海水吸收並去除鍋爐排氣中的硫氧化物。對於通過多孔 架板3進行氣液接觸之後，換言之，在吸收並去除鍋爐排 -9- 200902139 氣中的硫氧化物之脫硫後’海水流下至脫硫塔2的底部並 從海水排出管6流出，鍋爐排氣則從於上部開口的鍋爐排 氣排出口 8流出。 於上述所構成的海水脫硫裝置1A中，是配置有用以 將脫硫塔2內的水平斷面積縮小至預定値以下之區隔給直 方向的區隔板1 0。此區隔板1 0，是依多孔架板3的每— 段獨立地設置。亦即，區隔板1 0，藉由形成從各段的多孔 架板3朝向上方大致垂直地立起之壁面，藉此依多孔架板 3的每一段分割水平斷面積。 第2圖，是顯示藉由區隔板1〇之水平斷面積的分割 例的圖。在此分割例中，是藉由：將徑向對半分割的圓形 分隔板1 1、及將圓周方向以4 5度間距作8等分分割的轄 射分隔板12、以及將圓形分隔板11的外周部更進一步地 於圓周方向對半分割的輻射輔助分隔板13，將脫硫塔2的 水平斷面積做24等分分割。 上述之區隔板1 0的高度Η，是設到至少比濕式基材3 上的海水滯留高度h還高的位置（H>h)。亦即，從成爲 濕式基材的多孔架板3朝向上方立起之壁面的高度H，是 被設定成使滯留在濕式基材3上的海水不會超過區隔板i 〇 朝向鄰接的區塊流出。滯留於多孔架板3的海水滞留高度 h，由於可以由設於多孔架板3之孔4的開口面積合計値 與海水的供給量之間的關係所推測出，所以以比此推測値 還高地來設置區隔板1 〇即可。 依據上述構成的海水脫硫裝置1 A，從脫硫塔2上方 -10- 200902139 流下的海水，是通過由區隔板1 〇分割至預定的水平斷面 積以下的多孔架板3而落下。此時，滯留於多孔架板3的 海水面W，由於比區隔板10的高度h還低，故藉由區隔 板1 0限制海水的流動方向，所滯留的海水不會超過區隔 板1 0而產生橫流。如此之防止橫流，由於從下方上昇起 來的鍋爐排氣在通過多孔架板3亦具有大致相同的功能， 所以鍋爐排氣與海水不會產生偏流。 又，爲了更確實地防止橫向流動，在設定區隔板10 的高度h時，以受到從下方上昇流動的鍋爐排氣之影響引 起波浪之海水面W的最大高度來作爲基準即可。 其結果，滯留於多孔架板3之各分割區塊內的海水面 W，由於每一區塊之差變小而成爲大致一定，換言之，由 於滯留於多孔架板3之各分割區塊的海水分布大致維持均 一，所以可以防止從下方上昇的鍋爐排氣與海水呈分離無 相互接觸地穿過多孔架板3之所謂竄氣現象。 如此地，當防止了海水與鍋爐排氣的偏流或竄氣現象 時，由於通過多孔架板3的海水與鍋爐排氣能夠充分地接 觸，所以可以有效地利用供給至脫硫塔2的海水，效率良 好地進行脫硫。 此外，在上述的實施形態中，雖說明了在脫硫塔2內 配置多孔架板3的海水脫硫裝置1 A，但如以下所說明， 取代利用多孔架板3的氣液接觸，以採用噴霧方式或充塡 方式亦可。又，在以下說明所使用的圖面中，對於與上述 實施形態相同樣的部分標示以相同的元件符號，並省略其 -11 - 200902139 詳細說明。 第4圖所示的第1變形例’爲採用由噴霧方式 接觸的海水脫硫裝置1 B。此裝置’是於脫硫塔2 配置多數個噴射海水的噴霧噴頭20，藉由從噴霧c 所噴射出的海水與鍋爐排氣之氣液接觸來脫硫。此 之區隔板1 0，例如是利用噴霧配管2 1等支持於預 〇 對於如此所構成之海水脫硫裝置1 B，亦可以 區隔板1 〇將脫硫塔2的內部分割至使其水平斷面 預定値以下之方式，來防止鍋爐排氣的偏流或竄氣 又，此噴霧方式，以適切地進行噴霧噴頭20的配 以大致均一地分散海水來進行噴射。 第5 ( a )圖所示之第2變形例的海水脫硫裝f 是採用以充塡方式之氣液接觸者。在此方式中’是 塔2的內部設置促進海水與鍋爐排氣之氣液接觸的 元30。在此，是以區隔板10將充塡單元30的水平 割成複數個，且分割後的各水平斷面是小於預定値 又，於第5(b)圖，是顯示利用充塡方式之以 水脫硫裝置1C’，此情形之充塡單元30’，其水平 有被分割而與脫硫塔2的斷面大致一致。 對於如此所構成的海水脫硫裝置1C，由於設 硫塔2內部之充塡單元3 0的水平斷面積是以區隔| 割至預定値以下，所以可以防止鍋爐排氣的偏流或 象。 ;之氣液 的內部 賁頭20 Μ青形下 :定位置 藉由以 積成爲 現象。 置，可 tic， 在脫硫 充塡單 斷面分 以下。 往的海 面並沒 置於脫 反10分 竄氣現 -12- 200902139 如上述般地，由於是配置有將脫硫塔2內的水平斷面 積區隔至預定値以下之鉛直方向的區隔板來限制海水的橫 向流動，所以朝上上昇之鍋爐排氣的流動以及朝下流下之 海水的流動分布在水平斷面內難以產生成爲不均一的偏流 。因此，對於採用海水法之海水脫硫裝置1A、1B、1C， 可以以容易且簡單的構造確實地抑制或防止因脫硫塔2的 大型化等所容易產生的偏流及鍋爐排氣的竄氣現象，而能 夠得到良好的脫硫性能。 又，本發明並非是由上述實施形態所限定，在不脫離 本發明之主旨的範圍內可以適當地變更。 【圖式簡單說明】 第1圖是本發明之海水脫硫裝置之一實施形態的斷面 圖。 第2圖是第1圖之A-A線的斷面圖。 第3圖是隔板之高度Η的說明圖。 第4圖是本發明之海水脫硫裝置之第1變形例的斷面 圖。 第5圖是本發明之海水脫硫裝置之第2變形例的斷面 圖。 第6圖是海水脫硫裝置之先行構造的斷面圖β 【主要元件符號說明】 1 A、1 Β、1 C :海水脫硫裝置 -13- 200902139 2 :脫硫塔 3 :多孔架板 4 :孔 5 :海水供給管 6 :海水排出管 7 :鍋爐排氣供給口 8 :鍋爐排氣排出口 1 0 :區隔板 2 0 :噴霧噴嘴 30 :充塡單元 W :海水面 -14-200902139 IX. INSTRUCTIONS OF THE INVENTION [Technical Fields According to the Invention] The present invention relates to a flue gas desulfurization device suitable for a power plant that burns coal, burns crude oil, and burns heavy oil, and more particularly relates to a flue gas desulfurization using a seawater method. Sulfur device. [Prior Art] In the past, the combustion exhaust gas (hereinafter referred to as "boiler exhaust gas") discharged from the boiler in a power plant using coal or crude oil as a fuel is the sulfur dioxide contained in the boiler exhaust gas. After the sulfur oxide (Sox) of (so2) is removed, it is released into the atmosphere. As a desulfurization method for the flue gas desulfurization apparatus which performs such desulfurization treatment, a limestone gypsum method, a spray dryer method, and a seawater method are known. Among them, a flue gas desulfurization device using seawater method (hereinafter referred to as "seawater desulfurization device") is a desulfurization method using seawater as an absorbent. This method is, for example, by supplying seawater and boiler exhaust gas to the inside of a desulfurization tower (absorption tower) which is disposed upright in a cylindrical shape, and forms a wet substrate using seawater as an absorption liquid. Gas-liquid contact to remove sulfur oxides. In the seawater desulfurization apparatus 1, for example, as shown in Fig. 6, one of the seawater is supplied from the upper portion of the desulfurization tower 2 and naturally falls, and is supplied to the boiler exhaust gas which is supplied from the lower portion of the desulfurization tower 2 and rises. A gas-liquid contact is formed between them. The gas-liquid contact between the seawater and the boiler exhaust gas is performed by using a plurality of porous plate frames 3 arranged at predetermined intervals in the vertical direction in the desulfurization tower 2 as a wet substrate, and the sea-5-200902139 water and the boiler exhaust gas are passed. This is achieved by penetrating a plurality of holes 4 provided in the perforated plate holder 3. Further, the reference numeral 5 in the figure is a seawater supply pipe, 6 is a seawater discharge pipe through which desulfurized seawater flows out, 7 is a boiler exhaust gas supply port, and 8 is a boiler exhaust gas for allowing desulfurized boiler exhaust gas to flow out. The discharge port (for example, refer to Patent Documents 1 and 2). [Patent Document 1] Japanese Laid-Open Patent Publication No. 2001-129352 [Patent Document 2] [Problems to be Solved by the Invention] However, in the above-described seawater desulfurization device 1 In the sulfur tower 2, since the boiler exhaust gas rising from below is desulfurized by contact with the seawater gas and liquid flowing from above, the flow of the boiler exhaust gas and the seawater is distributed at the level of the desulfurization tower 2. When the formation is not uniform in the cross section, there is an obstacle to ensuring the desulfurization performance. The specific description is as follows. When the flow of the boiler exhaust gas and the flow of the seawater generate a non-uniform drift in the horizontal section of the desulfurization tower 2, for example, as shown in Fig. 6, the upward flow of the boiler exhaust gas The solid arrow shows that the seawater flowing down naturally (shown by a dashed arrow in the figure) causes separation, resulting in a helium phenomenon of so-called boiler exhaust flowing through the holes 4 in different regions. As a result, the contact between the boiler exhaust and the seawater is insufficient, resulting in a decrease in the flow ratio of the desulfurization which facilitates the contact between the boiler exhaust and the seawater. The above-mentioned bias current and helium phenomenon are causes of the sulfur oxides in the exhaust gas of the boiler -6 - 200902139, which cannot be sufficiently desulfurized and directly desulfurized by the exhaust gas. With such a bias and helium phenomenon, the larger the cross-sectional area of the desulfurization tower 2, the greater the amount of exhaust gas to be treated, or the setting of the rising speed of the boiler exhaust gas to a relatively low speed. The more obvious it is. The reason for the above-mentioned bias flow is considered to be, for example, the inflow angle of the boiler exhaust gas, the size (width, depth, height, or tower diameter, height) of the desulfurization tower 2, the position and number of the porous frame plate 3 And other factors. However, in order to find the optimum size shape that can prevent the occurrence of the bias current, it is necessary to analyze the above causes by model test or simulation test, which becomes an extremely difficult task requiring time consuming and cost. In this way, in the case of the flue gas desulfurization device (seawater desulfurization device) using the seawater method, the desulfurization performance is lowered due to the occurrence of a bias current and a helium gas phenomenon in the exhaust gas of the boiler due to an increase in the size of the desulfurization tower, and thus it is desired A flue gas desulfurization apparatus capable of reliably preventing the above-mentioned deficiency and obtaining good desulfurization performance with an easy and simple structure has been developed. The present invention has been made in view of the above circumstances, and an object of the invention is to provide a row using seawater method which can reliably prevent a drift phenomenon and a helium phenomenon of a boiler exhaust gas with an easy and simple structure, and can obtain a good desulfurization performance. Smoke desulfurization device. [Technical means for solving the problem of the invention] In order to solve the above problems, the present invention employs the following means. The flue gas desulfurization device of the present invention is a flue gas desulfurization device for making a gas-liquid contact with the combustion exhaust gas rising from the upper portion of the desulfurization tower and the combustion exhaust gas rising from the lower portion of the desulfurization tower, and desulfurizing the seawater method. The utility model is characterized in that a partition plate which divides the horizontal sectional area in the desulfurization tower into a vertical direction below a predetermined crucible is disposed. According to such a flue gas desulfurization device, since the partition plate is disposed so that the horizontal cross-sectional area in the desulfurization tower is divided into a vertical direction below a predetermined crucible, the lateral flow of the seawater is restricted by the partition plate and is difficult. A bias current is generated. In the above invention, the gas-liquid contact is performed by a wet substrate formed of a porous frame, and the partition plate is disposed to face upward from the wet substrate to at least It is desirable that the position of the seawater on the wet substrate is still high, whereby the pressure loss can be minimized and the drift can be prevented. Further, in the above invention, the gas-liquid contact may be either a spray type or a filling method. [Effect of the Invention] According to the present invention described above, the vertical partition is arranged such that the horizontal cross-sectional area in the desulfurization tower is divided into a predetermined enthalpy or less, thereby restricting the lateral flow of the seawater and raising the upward direction. The distribution of the flow of the combustion exhaust gas and the flow of the seawater flowing down is difficult to produce a non-uniform bias flow in the horizontal section. Therefore, in the flue gas desulfurization apparatus using the seawater method, it is possible to reliably suppress or prevent the occurrence of a bias current which is likely to occur due to an increase in size of the desulfurization tower or a helium phenomenon of the boiler exhaust gas, with an easy and simple structure. Good desulfurization performance is obtained. -8- 200902139 [Embodiment] Hereinafter, an embodiment of the flue gas desulfurization apparatus of the present invention will be described based on the drawings. The desulfurization tower 2 of the seawater desulfurization apparatus 1A shown in Fig. 1 is a combustion exhaust gas which is discharged from a boiler of a power plant using coal or crude oil as a fuel by a seawater method (hereinafter, simply referred to as "a boiler" A device that removes sulfur oxides (sox) such as sulfur dioxide (so2) contained in the exhaust gas) before being discharged to the atmosphere. A seawater desulfurization device 1 A, which is called a desulfurization method of the seawater method, uses seawater as an absorbent. The seawater desulfurization apparatus 1 A shown in the drawing is supplied with seawater and boiler exhaust gas to the inside of the desulfurization tower 2 in which a substantially cylindrical shape is erected, and the seawater is used as an absorbent to form a wet substrate. The liquid contacts to remove sulfur oxides. The seawater supplied to the desulfurization tower 2 is naturally dropped inside by ejecting from the upper portion in the desulfurization tower, whereas the boiler exhaust gas supplied to the desulfurization tower 2 is taken from the lower portion of the desulfurization tower 2 It is introduced into the desulfurization tower and rises. Inside the desulfurization tower 2, a porous frame plate 3 which is provided at a predetermined interval and has a plurality of sections in the upper and lower directions is disposed. The perforated frame 3 is a perforated plate having no weir and overflow, and the falling seawater and the rising boiler are exhausted through a plurality of holes 4 to cause gas-liquid contact with each other. In other words, the porous frame plate 3 functions as a wet substrate in which the seawater introduced from the seawater supply pipe 5 and the boiler exhaust gas introduced from the boiler exhaust gas supply port 7 are in gas-liquid contact, and the gas-liquid is formed. Contact to absorb the seawater of the absorbing liquid and remove sulfur oxides from the boiler exhaust. After gas-liquid contact through the porous shelf 3, in other words, after absorbing and removing the sulfur desulfurization in the boiler row-9-200902139 gas, the seawater flows down to the bottom of the desulfurization tower 2 and is discharged from the seawater 6 When flowing out, the boiler exhaust gas flows out from the boiler exhaust discharge port 8 which is open at the upper portion. In the seawater desulfurization apparatus 1A configured as described above, the partition plate 10 for dividing the horizontal cross-sectional area in the desulfurization tower 2 to a predetermined enthalpy or less is provided in the straight direction. The partition 10 in this area is independently provided for each section of the porous frame 3. That is, the partition plate 10 divides the horizontal sectional area by each of the porous frame plates 3 by forming a wall surface which rises substantially vertically upward from the perforated frame 3 of each stage. Fig. 2 is a view showing an example of division of the horizontal sectional area by the partition plate 1〇. In this divisional example, the circular partitioning plate 1 1 which is radially divided into half, and the arranging partitioning plate 12 which divides the circumferential direction into quarters at a pitch of 45 degrees, and the circle are The outer peripheral portion of the partition plate 11 further divides the horizontal sectional area of the desulfurization tower 2 into 24 equal divisions in the circumferential direction of the half-divided radiation-assisted partitioning plate 13. The height Η of the zone partition 10 described above is set to at least a position (H > h) higher than the seawater retention height h on the wet substrate 3. That is, the height H of the wall surface rising upward from the porous frame 3 which becomes the wet base material is set such that the seawater retained on the wet base material 3 does not exceed the zone partition i 〇 toward the adjacent side. The block flows out. The seawater retention height h of the porous shelf 3 is estimated by the relationship between the total opening area of the holes 4 provided in the porous frame 3 and the supply amount of seawater. Therefore, it is estimated that the seawater is higher than this. To set the zone partition 1 〇. According to the seawater desulfurization apparatus 1A having the above configuration, the seawater flowing down from the upper side of the desulfurization tower -10-200902139 is dropped by the partition plate 3 which is divided by the partition plate 1 to a predetermined horizontal section or less. At this time, since the sea surface W remaining in the porous frame plate 3 is lower than the height h of the partition plate 10, the flow direction of the seawater is restricted by the partition plate 10, and the retained seawater does not exceed the partition plate. 10 0 produces a cross flow. In such a manner as to prevent cross flow, the boiler exhaust gas rising from the lower side also has substantially the same function as passing through the porous frame plate 3, so that the boiler exhaust gas and the seawater do not cause a drift. Further, in order to prevent the lateral flow more reliably, when the height h of the partition plate 10 is set, the maximum height of the sea surface W of the wave may be caused by the influence of the boiler exhaust flowing upward from below. As a result, the sea surface W remaining in each of the divided blocks of the porous frame plate 3 becomes substantially constant as the difference between each block becomes small, in other words, the seawater retained in each divided block of the porous frame plate 3 The distribution is substantially uniform, so that the so-called helium phenomenon in which the boiler exhaust gas rising from below is separated from the seawater without passing through the porous frame plate 3 can be prevented. In this way, when the seawater and the boiler exhaust gas are prevented from drifting or suffocating, since the seawater passing through the porous shelf 3 can be sufficiently brought into contact with the boiler exhaust gas, the seawater supplied to the desulfurization tower 2 can be effectively utilized. Desulfurization is carried out efficiently. Further, in the above-described embodiment, the seawater desulfurization apparatus 1A in which the porous frame 3 is disposed in the desulfurization tower 2 has been described, but as described below, instead of the gas-liquid contact by the porous frame 3, Spray or charging can also be used. In the drawings used in the following description, the same reference numerals are given to the same parts as those in the above-described embodiment, and the detailed description thereof is omitted -11 - 200902139. The first modification shown in Fig. 4 is a seawater desulfurization apparatus 1 B which is in contact with a spray method. This apparatus' is a spray head 20 in which a large number of seawater sprayed is disposed in the desulfurization tower 2, and the seawater sprayed from the spray c is brought into contact with the gas and liquid of the boiler exhaust gas to be desulfurized. The partition plate 10 of the present invention is supported by, for example, a spray pipe 21 or the like for the seawater desulfurization device 1 B configured as described above, or may partition the inside of the desulfurization tower 2 to the partition plate 1 to The horizontal section is predetermined to prevent the biasing of the boiler exhaust gas or the helium gas. In this spraying method, the spray head 20 is appropriately disposed to disperse seawater substantially uniformly and sprayed. The seawater desulfurization device f according to the second modification shown in Fig. 5(a) is a gas-liquid contact in a charged manner. In this mode, 'the inside of the tower 2 is provided with a member 30 for promoting gas-liquid contact between seawater and boiler exhaust. Here, the level of the charging unit 30 is cut into a plurality of pieces by the partition plate 10, and the divided horizontal sections are smaller than the predetermined one. In the fifth (b) diagram, the charging method is used. The water desulfurization device 1C', in this case, the charging unit 30', is horizontally divided to substantially coincide with the cross section of the desulfurization tower 2. In the seawater desulfurization apparatus 1C thus constituted, since the horizontal sectional area of the charging unit 30 inside the sulfur tower 2 is cut to a predetermined level or less by the partition |, it is possible to prevent the drift of the boiler exhaust gas. The internal part of the gas and liquid is 20 Μ green shape: the position is made by the product. Set, can be tic, in the desulfurization and filling the single section below. The sea surface is not placed in the reverse 10 minutes. -12- 200902139 As above, it is a partition with a vertical cross-section that separates the horizontal cross-sectional area in the desulfurization tower 2 below the predetermined crucible. In order to restrict the lateral flow of the seawater, the flow of the boiler exhaust gas rising upward and the flow distribution of the seawater flowing downward are hard to generate a non-uniform bias flow in the horizontal cross section. Therefore, the seawater desulfurization apparatuses 1A, 1B, and 1C using the seawater method can reliably suppress or prevent the bias current which is easily generated due to the increase in size of the desulfurization tower 2 and the helium gas of the boiler exhaust gas with an easy and simple structure. Phenomenon, and good desulfurization performance can be obtained. The present invention is not limited to the above-described embodiments, and can be appropriately modified without departing from the spirit and scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing an embodiment of a seawater desulfurization apparatus of the present invention. Fig. 2 is a cross-sectional view taken along line A-A of Fig. 1. Figure 3 is an explanatory view of the height 隔板 of the partition. Fig. 4 is a cross-sectional view showing a first modification of the seawater desulfurization apparatus of the present invention. Fig. 5 is a cross-sectional view showing a second modification of the seawater desulfurization apparatus of the present invention. Figure 6 is a cross-sectional view of the first structure of the seawater desulfurization device. [Key element symbol description] 1 A, 1 Β, 1 C : Seawater desulfurization device-13- 200902139 2: Desulfurization tower 3: Porous frame 4 : Hole 5 : Seawater supply pipe 6 : Seawater discharge pipe 7 : Boiler exhaust gas supply port 8 : Boiler exhaust gas discharge port 1 0 : Zone partition 2 0 : Spray nozzle 30 : Filling unit W : Sea surface - 14 -